TECHNET Archives

February 2011

TechNet@IPC.ORG

Options: Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
Amol Kane <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Amol Kane <[log in to unmask]>
Date:
Tue, 15 Feb 2011 15:32:50 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (1 lines)
Thank you for all the responses. We will be running a new lot next week. Will keep you posted.

Amol




-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of [log in to unmask]
Sent: Tuesday, February 15, 2011 2:25 PM
To: [log in to unmask]
Subject: Re: [TN] Surface Mount connector discoloration

Hi,

Pls try to place the PCAs on the conveyor 180 deg. And check the results. 
Maybe the heat from the side fingers affect the results.

Reuven
ROKAH Technologies

נשלח מה-iPhone שלי

ב-14 בפבר 2011, בשעה 16:19, Bev Christian <[log in to unmask]> כתב/ה:

> Have you put thermocouples on the leads on the leading and trailing edge?  How old is your oven?
> 
> Bev
> RIM
> 
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Amol Kane
> Sent: Monday, February 14, 2011 9:16 AM
> To: [log in to unmask]
> Subject: [TN] Surface Mount connector discoloration
> 
> Dear Technetters,
> We have a SMT mounted connector:  copper alloy base, Ni underplate and gold flash on the surface. The connector is perpendicular to the direction of travel in reflow (LF board, 240C peak). One side of the connector solders with good heel fillets without any discolored pins, but the pins on the other side get discolored (reddish purple hue) and has more inconsistent solder flow on the heel (some acceptable, some barely acceptable). The connector is rated to 260C reflow capable.
> 
> The connector can only go in one way, and it's always the leading edge in reflow that has the hue.  It could be a part issue or a reflow issue. I wanted to know if anybody else experienced this with the specific connector material set and what the root cause may be
> 
> We have a run coming up and I can/will post pictures. Any suggestions before the run with just the explanation  given above will be greatly appreciated. I have contacted the manufacturer and await their reply. Just thought I would also e-mail the experts on the group about this.
> 
> Regards,
> Amol
> 
> 
> ______________________________________________________________________
> This email has been scanned by the MessageLabs Email Security System.
> For more information please contact helpdesk at x2960 or [log in to unmask] 
> ______________________________________________________________________
> 
> ---------------------------------------------------
> Technet Mail List provided as a service by IPC using LISTSERV 15.0
> To unsubscribe, send a message to [log in to unmask] with following text in
> the BODY (NOT the subject field): SIGNOFF Technet
> To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
> To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
> Search the archives of previous posts at: http://listserv.ipc.org/archives
> Please visit IPC web site http://www.ipc.org/ContentPage.aspx?Pageid=E-mail-Forums for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
> -----------------------------------------------------
> 
> ---------------------------------------------------------------------
> This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful.
> 
> ______________________________________________________________________
> This email has been scanned by the MessageLabs Email Security System.
> For more information please contact helpdesk at x2960 or [log in to unmask] 
> ______________________________________________________________________
> 
> ---------------------------------------------------
> Technet Mail List provided as a service by IPC using LISTSERV 15.0
> To unsubscribe, send a message to [log in to unmask] with following text in
> the BODY (NOT the subject field): SIGNOFF Technet
> To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
> To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
> Search the archives of previous posts at: http://listserv.ipc.org/archives
> Please visit IPC web site http://www.ipc.org/ContentPage.aspx?Pageid=E-mail-Forums for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
> -----------------------------------------------------

______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/ContentPage.aspx?Pageid=E-mail-Forums for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------

______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________

ATOM RSS1 RSS2